Blank for three compartment box



FIG. 1 is a top plan view of a blank for a three compartment box embodying my new design, the bottom plan view being the same in appearance;

FIG. 2 is a front elevational edge view of my new design, the rear elevational edge view being the same in appearance; and

FIG. 3 is a right end elevational edge view of my new design, the left end elevational edge view being the same in appearance.

The blank is of conventional thickness. The dash lines formed of dashes of uniform length represent fold lines which are also perforated, while the dash lines formed of long and short dashes represent fold lines without perforations. 

The ornamental design for a blank for a three compartment box, substantially as shown and described. 